Front Crankshaft Seal: Service and Repair

11 14 005 - Replacing front crankshaft radial seal (N14)





Special tools required:





Important!
PTFE ring is supplied with a supporting ring.

Supporting ring is required as an installation tool; do not touch inner surface of PTFE ring with fingers (risk of damage!).





Necessary preliminary tasks:
- Remove A/C line from compressor.
- Remove vibration damper.





Important!
Do not release central bolt.

If the central bolt is released, the sprocket wheels of the timing chain and the oil pump will no longer be non-positively connected to the crankshaft. The camshafts can warp in relation to the crankshaft (risk of damage!).





Drive PTFE ring inwards with a drift (1) until PTFE ring tilts outwards at bottom.

Important!
PTFE ring can slip inwards.





Secure special tool 11 9 601 with screws (1) to crankshaft to 15 Nm.





Installation Note:
Apply a light coating of oil to special tool 11 9 601.

Position PTFE ring (2) with supporting ring (1) on special tool 11 9 601.

Push PTFE ring (2) over supporting ring (1) in direction of arrow up to crankcase.





Remove supporting ring from special tool 11 9 601.

Note:
Supporting ring is no longer needed.





Draw in PTFE ring with special tool 11 9 602 in conjunction with special tool 11 9 603 until flush.





Assemble engine.